An infilled backbarrier wetland located behind a stationary-type coastal bay barrier is used to reconstruct a 6000-year paleo-environmental record that incorporates gradual, catastrophic, and human-influenced sedimentation styles on the New Zealand coast. The record is assembled from a range of proxy indicators (grain size, magnetic susceptibility, organic content, diatoms, and pollen) and is temporally constrained by tephrochronology, radiocarbon dating, and optical dating. Postglacial sea-level rise, volcanism, tsunami, and catchment clearance are all evident in the sediment record, either as artifacts or indirect indicators. Results from optical dating also provide insights into the process of sediment reworking and mixing from multiple sources during tsunami transport. We argue that backbarrier wetlands formed behind stationary-type (aggraded) bay barriers are of greater value (more sensitive) for longer-term paleo-environmental reconstruction than wetlands associated with prograded-type and receded-type barriers, where the sediment record is typically less complete.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 2007 • No. 233